[FFmpeg-cvslog] doc/showspectrum: add some examples.

[Clément Bœsch]

ffmpeg | branch: master | Clément Bœsch <ubitux at gmail.com> | Tue Mar  5 20:37:58 2013 +0100| [72d2e9437d7e579e1ac62719360e25a2ecee6ab9] | committer: Clément Bœsch

doc/showspectrum: add some examples.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=72d2e9437d7e579e1ac62719360e25a2ecee6ab9
---

 doc/filters.texi |   17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index 5cfe531..e260216 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -6601,6 +6601,23 @@ Default value is @code{1}.
 The usage is very similar to the showwaves filter; see the examples in that
 section.
 
+ at subsection Examples
+
+ at itemize
+ at item
+Large window with logarithmic color scaling:
+ at example
+showspectrum=s=1280x480:scale=log
+ at end example
+
+ at item
+Complete example for a colored and sliding spectrum per channel using @command{ffplay}:
+ at example
+ffplay -f lavfi 'amovie=input.mp3, asplit [a][out1];
+             [a] showspectrum=mode=separate:color=intensity:slide=1:scale=cbrt [out0]'
+ at end example
+ at end itemize
+
 @section showwaves
 
 Convert input audio to a video output, representing the samples waves.